The AEC Regal IV was a bus chassis manufactured by AEC from 1949 to 1962.
History The AEC Regal IV was AEC's first mainstream underfloor engined vehicle. A prototype was built in 1949, before production commenced in 1952.London Transport First RF Bus Placed in Service Railway Gazette 19 September 1952 page 329 The first 25 were built to the maximum permissible length of for London Transport before maximum length for PSVs increased to .
Over 2,600 were built, London Transport was the largest operator, purchasing over 700, while British European Airways purchased 64 as coaches.Flying High Bus & Coach Preservation August 2016 page 56 Production for UK market finished in 1955 with the introduction of the AEC Reliance but it remained in production for export markets until the 1960s.
Exports New Zealand At least 117 Regal IV vehicles were exported to New Zealand between 1952 and 1955. For Christchurch and New Plymouth, these were specifically to replace the city's tram networks. These included: Auckland Regional Authority - 12 vehicles Christchurch Transport Board - 95 vehicles New Plymouth City Transport - 10 vehicles Otago Road Services - 1 vehicle
Spain Alsa (bus company) - 2 vehicles
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